An oscillating Langevin antenna for driving plasma turbulence simulations

被引：49

作者：

TenBarge, J. M. ^{[1
]}

Howes, G. G. ^{[2
]}

Dorland, W. ^{[1
]}

Hammett, G. W. ^{[3
]}

机构：

[1] Univ Maryland, IREAP, College Pk, MD 20742 USA

[2] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

[3] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2014年 / 185卷 / 02期

基金：

美国国家科学基金会;

关键词：

Numerical methods; Langevin; Turbulence; Plasma; SOLAR-WIND; ASTROPHYSICAL GYROKINETICS; HYDRODYNAMIC TURBULENCE; WAVE TURBULENCE; MHD TURBULENCE; INERTIAL-RANGE; ALFVEN WAVES; ANISOTROPY; SPECTRUM; DISSIPATION;

D O I：

10.1016/j.cpc.2013.10.022

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A unique method of driving Alfvenic turbulence via an oscillating Langevin antenna is presented. This method of driving is motivated by a desire to inject energy into a finite domain numerical simulation in a manner that models the nonlinear transfer of energy from fluctuations in the turbulent cascade at scales larger than the simulation domain. The oscillating Langevin antenna is shown to capture the essential features of the larger scale turbulence and efficiently couple to the plasma, generating steady-state turbulence within one characteristic turnaround time. The antenna is also sufficiently flexible to explore both strong and weak regimes of Alfvenic plasma turbulence. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：578 / 589

页数：12

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